Ecology and morphology of sympatric and allopatric populations of mountain whitefish, Prosopium williamsoni, and round whitefish, P. cylindraceum in lakes in western Canada
Diet analysis conducted on round whitefish (Prosopium cylindraceum) and mountain whitefish (P. williamsoni) from the one lake in which they are found in equal abundance indicated that there were diet differences between species and between different sizes of each species. Counts of six body parts ta...
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ftcanadathes:oai:collectionscanada.gc.ca:MWU.1993/6626 2023-05-15T17:08:01+02:00 Ecology and morphology of sympatric and allopatric populations of mountain whitefish, Prosopium williamsoni, and round whitefish, P. cylindraceum in lakes in western Canada Guinn, Brent Richard. 2012-05-18T19:10:30Z http://hdl.handle.net/1993/6626 unknown http://hdl.handle.net/1993/6626 2012 ftcanadathes 2014-03-30T00:51:21Z Diet analysis conducted on round whitefish (Prosopium cylindraceum) and mountain whitefish (P. williamsoni) from the one lake in which they are found in equal abundance indicated that there were diet differences between species and between different sizes of each species. Counts of six body parts taken on round whitefish differed between allopatric and sympatric lakes after accounting for environmental differences between lakes. This convergent character displacement was assumed to be a result of competition for food. There was no indication of hybridization between these species. Analysis of occurrence, distribution and abundance data of coregonids in western Canada suggests that mountain whitefish colonized lower Liard River lakes before lake whitefish (Coregonus clupeaformis) and round whitefish had access to the area. Round whitefish probably did not disperse farther south because of the presence of northward dispersing mountain whitefish. Mountain whitefish are able to colonize lakes that contain round whitefish because of their ability to make use of streams tributary to such lakes. Mountain whitefish apparently never become abundant in lakes previously colonized by round and lake whitefish. Other/Unknown Material Liard River Theses Canada/Thèses Canada (Library and Archives Canada) Canada Liard ENVELOPE(-67.417,-67.417,-66.850,-66.850) |
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Theses Canada/Thèses Canada (Library and Archives Canada) |
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ftcanadathes |
language |
unknown |
description |
Diet analysis conducted on round whitefish (Prosopium cylindraceum) and mountain whitefish (P. williamsoni) from the one lake in which they are found in equal abundance indicated that there were diet differences between species and between different sizes of each species. Counts of six body parts taken on round whitefish differed between allopatric and sympatric lakes after accounting for environmental differences between lakes. This convergent character displacement was assumed to be a result of competition for food. There was no indication of hybridization between these species. Analysis of occurrence, distribution and abundance data of coregonids in western Canada suggests that mountain whitefish colonized lower Liard River lakes before lake whitefish (Coregonus clupeaformis) and round whitefish had access to the area. Round whitefish probably did not disperse farther south because of the presence of northward dispersing mountain whitefish. Mountain whitefish are able to colonize lakes that contain round whitefish because of their ability to make use of streams tributary to such lakes. Mountain whitefish apparently never become abundant in lakes previously colonized by round and lake whitefish. |
author |
Guinn, Brent Richard. |
spellingShingle |
Guinn, Brent Richard. Ecology and morphology of sympatric and allopatric populations of mountain whitefish, Prosopium williamsoni, and round whitefish, P. cylindraceum in lakes in western Canada |
author_facet |
Guinn, Brent Richard. |
author_sort |
Guinn, Brent Richard. |
title |
Ecology and morphology of sympatric and allopatric populations of mountain whitefish, Prosopium williamsoni, and round whitefish, P. cylindraceum in lakes in western Canada |
title_short |
Ecology and morphology of sympatric and allopatric populations of mountain whitefish, Prosopium williamsoni, and round whitefish, P. cylindraceum in lakes in western Canada |
title_full |
Ecology and morphology of sympatric and allopatric populations of mountain whitefish, Prosopium williamsoni, and round whitefish, P. cylindraceum in lakes in western Canada |
title_fullStr |
Ecology and morphology of sympatric and allopatric populations of mountain whitefish, Prosopium williamsoni, and round whitefish, P. cylindraceum in lakes in western Canada |
title_full_unstemmed |
Ecology and morphology of sympatric and allopatric populations of mountain whitefish, Prosopium williamsoni, and round whitefish, P. cylindraceum in lakes in western Canada |
title_sort |
ecology and morphology of sympatric and allopatric populations of mountain whitefish, prosopium williamsoni, and round whitefish, p. cylindraceum in lakes in western canada |
publishDate |
2012 |
url |
http://hdl.handle.net/1993/6626 |
long_lat |
ENVELOPE(-67.417,-67.417,-66.850,-66.850) |
geographic |
Canada Liard |
geographic_facet |
Canada Liard |
genre |
Liard River |
genre_facet |
Liard River |
op_relation |
http://hdl.handle.net/1993/6626 |
_version_ |
1766063568524935168 |